Fuel-feeder nozzle



J. W. COX

FUEL FEEDER NOZZLE Jan. 1, 1929.

Filed FeB. e, 1925 II :II

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Patented Jan. 1, 1929.

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JOHN XVILLIADI COX, OI ERIE, PENI-TSYLVANIAQ ASSIGNOR OF ONE-FOURTH. TO GEORGE E. IVIETCALF AND ONE-FGUETH T0 EDWARD E. VIALKER, BOTH OF ERIE, PENNSYLVANIA.

Application filed February .3, 1925.

This invention is designed to improve the delivery of fine fuel, such as coal dust, which is delivered with a conveying air and has supplemental air supplied to give sutticient air for combustion. One of purposes of the invention is to more thoroughly mix the sup plemental air with the conveying air and dust so that a more complete combustion may be accomplished. Features and details of the invention will appear from the specification and claim.

The invention is illustrated in the accom panying drawings as follows:

Fig. 1 shows a central sectional view of the preferred form of feeder.

Fig. 2 an end elevation of one of. the deflector rings of the nozzle of this'fceder.

Fi 3 a section of the same ring.

1 marks the fuel conveyingpipe, and 2 a rmpplemental air conveying pipe which is in the form of an elbow the fuel conveying pipe leading into the elbow through a stufling box 3. A nozzle shell l is secured to the elbow, the elbow and nozzle being provided with flanges 5 5 through which bolts 6 ere tend. A ring 7 is carried by the shell 4- by arms 7*. The ring has the recess 8 rrureivingg the pipe 1, and the forward projection or defiector ring 9. A spree der 1O mounted by means of a web 11 on the rin i 7 and extends 'lorwardly into the nozzle. the purpose oil being to spread the incoming air and dust. A series 01" deflector rings 12 are arranged within the shell 4-, the shells being oil slightly increasi 11g size so that they form an inner X- pending cone-shaped wall surrounding the spreader. These rings have extending slot- FUEL-FEEDER NOZZLE.

Serial No. 7,341.

ted ears 12 and are clamped together by bolts 13 which extend from the arms 7 to projections it on the outer ring 12. The deflector rings have air passages 15 connecting the part within the rings with a passage 45 outside the rings. The air is broken up by the separating passages 15 and enters the center of the nozzle in streams, these streams being given a rotary or spiral direction. The passages 15 in succeeding rings have their direction of spiral reversed so that with each succeeding ring the jets of air are delivered with reverse spirals, thus entering into and giving to the dust-laden air from the conveyor pipe supplemental air which is thoroughly distributed and mixed with the dust laden air, thus insuring complete combustion on the issuance of the mixture from the nozzle. A cap 16 is screwed on the end of the shell and centers the outer ring); 12, this ring. having an extension 1'? for this purpose.

lVhat I claim as new is In a fuel feeder nozzle, the combination oi. an outer shell; an air pipe leading to the outer shell; deflectors directing the air from the outer end inwardly, said deflectors being in the form of separate rings, said rings breakingthe air up into strean'is having spiral directions, somcoi' the streams having are verse spiral to others; bolts extending through the rings clamping them together; and a dust supplypipe leading to thespace within the deflectors.

in testimony whcrco'lv l have hereunto set my hand. 7

JOHN WVILLIAM COX. 

